CDMA receiver designSimona Lohan simona@cs.tut. CDMA RECEIVER DESIGN ASPECTS Simona Lohan, ICE/TUT Outline Basics of spread spectrum communications (DS, FH, TH, hybrids) Fading channel problem Rake receiver concept and the need for channel estimation Baseband receiver components: main emphasis on the channel estimator part Amplitude and phase estimation: structures of the estimator Multipath delay estimation; interpolation based delay estimation Signal processing for positioning applications Challenges for CDMA receiver: transmit power control, soft handover, multiple antennas. Summary and conclusions; references 83080 Receiver Architectures and Signal Processing 1 Simona Lohan simona@cs.tut. Basics of spread spectrum communications Channel capacity [Shannon]: C = W log2 1 + S N S Increased ca……